If one were to instruct a beginning piano student to play the Cmaj scale 1000 times a day for the next 1000 days, will the student be a better student as a result of it? All suburi are rather simple movements of the arms and takes less then ten minutes under constant supervision to 'master'. Suburi is a warmup and nothing else. Much like if a pianist is given a piece to learn in five hours, the pianist will not spend four hours and fifty minutes playing the scale in a delusion that the exercise will help him/her learn the piece.